Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 1392 for “"Diffuse"”.
-
Diffuse flow from hydrothermal vents
The effluent from a collection of diffuse hydrothennal vents was modelled to determine the fate of this source of flow under typical environmental conditions at seafloor spreading centers. A laboratory simulation was conducted to test an analytic model of diffuse plume rise. The results showed that …
-
Topics in diffuse field ultrasonics
… times contain much information. Studying these diffuse fields and extracting the information contained in them are the primary aims of Diffuse Field Theory. When the waves of interest are elastic waves at frequencies above 20kHz, the subject can be called Diffuse Field Ultrasonics. Here, three …
-
Diffuse Damage Repair Mechanism in Bone
… fragility. Linear microcracks (50-100 µm) and diffuse damage (Dif.Dx) (sub-micron) are the two types of microdamage. Recent studies show that Dif.Dx repairs without bone remodeling, pointing to a direct healing mechanism for these small cracks. These discoveries raise questions about the …
-
A Study of Small Diffuse Nebulae
Made available in DSpace on 2014-12-14T05:15:26Z (GMT). No. of bitstreams: 1 7524364.pdf: 2842813 bytes, checksum: a0f750abcab66ffd593aef15e9285c88 (MD5) Previous issue date: 1975
-
Diffuse X-ray scattering from tropomyosin crystals
… the Bragg scattering and also give rise to diffuse scattering between and surrounding the Bragg spots. The diffuse X-ray scattering may comprise a large part of the total scattering from the crystal, and it contains information about the correlation of motions that is not available from …
-
Ultra-diffuse galaxy candidatesin stripe 82 clusters
… of these faint galaxies are classified as Ultra-Diffuse galaxies (UDGs). UDGs are low surface brightness galaxies with a very low stellar mass component, however they have sizes comparable to the Milky Way. These galaxies are hard to detect and classify as they are very faint. To survive in the …
-
Diffuse reflectance spectroscopy of human colon tissue
Diffuse reflectance spectroscopy can provide quantitative biochemical and morphological information for the analysis of biological tissue epithelium and the detection of precancerous lesions. To investigate this, diffuse reflectance spectra were collected from adenomatous colon polyps (cancer …
-
Developing High-Density Diffuse Optical Tomography for Neuroimaging
… for the technique slowed. In our lab, we develop diffuse optical tomography: DOT), which is a more advanced method of performing optical imaging. My research has been to pioneer the in vivo use of DOT for advanced neuroimaging by: 1) quantifying the advantages of DOT through both <italic>in …
-
Lattice Boltzmann Methods for Diffuse and Mobile Interfaces
In this work, various systematic approaches are employed for deriving the truncation error of LB models which approximate Navier-Stokes flows. Improved LB models are formulated and validated through point-by-point comparison with limiting benchmark flows. Finally, the modified LB models are used to …
-
Diffuse double-layer interaction for nonspherical colloidal particles
The DLVO theory of colloids is used to consider the stability of clay colloid particles. An approach to colloid physics using classical electrostatic methods is presented. Specifically, the electrical double layer is examined using computational methods. To this end, the Poisson-Boltzman equation …
-
Diffuse Optical Tomography Methods for Imaging the Developing Brain
<p>Diffuse optical imaging (DOI) is a portable imaging modality that provides the ability to perform early and continuous monitoring of brain function in infants. Its methodology overcomes many of the technical and logistical challenges of performing magnetic resonance imaging (MRI) investigations …
-
Diffuse axonal injury effect on myelinating cells and axons
… evidence whether myelin degeneration in diffuse axonal injury (DAI) of the white matter is due to death of myelinating oligodendrocytes or secondary axotomy. Cortical neurons are not able to remain healthy in culture to have their axons myelinated. Dorsal root ganglion (DRG) neurons have …
-
Capillary forces and wetting dynamics by diffuse-interface modeling
… line are studied within the framework of the diffuse interface theory. The key to understanding the dynamics of interfacial systems lies in an accurate description of the capillary forces. In this work, we combine the diffuse interface theory with a multiphase lattice Boltzmann algorithm to …
-
Multi-physics Diffuse Interface Methods For Computational Material Modelling
… this work uses an Eulerian finite-volume diffuse interface scheme to examine high-Mach-number flows in a range of materials, including fluids, elastoplastic solids and multi-phase mixtures. This is achieved by both amalgamating existing separate diffuse interface methods for multi-phase …
-
Investigating Cerebral Function in Neonates Using Diffuse Optical Tomography
… detect and understand brain injury in patients. Diffuse optical tomography (DOT) is a promising imaging technique that is non-invasive, portable and relatively simple to operate. In this thesis, I describe the development and design of DOT headgear for neonates and subsequently apply this in …
-
Modeling torso imaging via time-domain diffuse correlation spectroscopy
… field by examining the efficacy of time-domain diffuse correlation spectroscopy (TD-DCS) as a means of imaging bleeding within the torso. TD-DCS is a new, powerful imaging technique with primary application of measuring blood flow in the brain. Here we show both how this novel imaging technique …
-
Untangling compact and diffuse ionized emission toward galactic hii regions
… line (RRL) and also thermal radio continuum. Diffuse ionized hydrogen, known as the 'Warm Ionized Medium' (WIM) also exists in the Galaxy. The WIM also emits RRLs and thermal radio continuum. Previous observation of compact \hii regions found two RRL components for many sources, one from the …
-
Probing diffuse galactic synchrotron emission using meerkat single dish data
In recent experiments, the 21 cm neutral hydrogen (HI) line has been measured using the intensity mapping (IM) method. Measuring this HI line is a complex process because it is faint and easily contaminated by radio frequency interference (RFI) and the foregrounds. Using the MeerKLASS experiment, …
-
Using diffuse idiopathic skeletal hyperostosis to determine age at death
This research took an age-related condition, diffuse idiopathic skeletal hyperostosis (DISH) and used it to create a new technique for estimating the age at death of older human skeletal remains (age ≥40). Diffuse idiopathic skeletal hyperostosis is a condition characterized spinally by …
-
Search for a diffuse astrophysical neutrino flux with KM3NeT/ARCA
Τα τελευταία χρόνια, η πολυμηνυματική αστροφυσική έχει καθιερωθεί ως ένα από τα πλέον δυναμικά πεδία της αστροφυσικής υψηλών ενεργειών. Τηλεσκόπια νετρίνων όπως το IceCube, έχουν καταστήσει εφικτή την ταυτοποίηση κοσμικών πηγών νετρίνων, ανοίγοντας ένα νέο παράθυρο στην κατανόηση των πιο ακραίων …
Page 1 of 70